How to keep the self-oservation ability during the "catalysis"?

Because all I feel is the flow (something is going through me), and I also can feel the "interruption", my own stuff, but I can't really process it on the spot, because something else is flowing through me (so it feels).

So I just feel my stuff, see it.

Is it a matter of "practice"? and I will be able to let go my own attachments during this interaction?

Or is seeing enough?

And the motivation too: I don't make it (in terms of speed), it goes too fast.So the only thing I manage to do is to hold the field, space.